diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/internal/poly1305/sum_loong64.s')
| -rw-r--r-- | vendor/golang.org/x/crypto/internal/poly1305/sum_loong64.s | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/internal/poly1305/sum_loong64.s b/vendor/golang.org/x/crypto/internal/poly1305/sum_loong64.s new file mode 100644 index 000000000..bc8361da4 --- /dev/null +++ b/vendor/golang.org/x/crypto/internal/poly1305/sum_loong64.s @@ -0,0 +1,123 @@ +// Copyright 2025 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build gc && !purego + +// func update(state *macState, msg []byte) +TEXT ·update(SB), $0-32 + MOVV state+0(FP), R4 + MOVV msg_base+8(FP), R5 + MOVV msg_len+16(FP), R6 + + MOVV $0x10, R7 + + MOVV (R4), R8 // h0 + MOVV 8(R4), R9 // h1 + MOVV 16(R4), R10 // h2 + MOVV 24(R4), R11 // r0 + MOVV 32(R4), R12 // r1 + + BLT R6, R7, bytes_between_0_and_15 + +loop: + MOVV (R5), R14 // msg[0:8] + MOVV 8(R5), R16 // msg[8:16] + ADDV R14, R8, R8 // h0 (x1 + y1 = z1', if z1' < x1 then z1' overflow) + ADDV R16, R9, R27 + SGTU R14, R8, R24 // h0.carry + SGTU R9, R27, R28 + ADDV R27, R24, R9 // h1 + SGTU R27, R9, R24 + OR R24, R28, R24 // h1.carry + ADDV $0x01, R24, R24 + ADDV R10, R24, R10 // h2 + + ADDV $16, R5, R5 // msg = msg[16:] + +multiply: + MULV R8, R11, R14 // h0r0.lo + MULHVU R8, R11, R15 // h0r0.hi + MULV R9, R11, R13 // h1r0.lo + MULHVU R9, R11, R16 // h1r0.hi + ADDV R13, R15, R15 + SGTU R13, R15, R24 + ADDV R24, R16, R16 + MULV R10, R11, R25 + ADDV R16, R25, R25 + MULV R8, R12, R13 // h0r1.lo + MULHVU R8, R12, R16 // h0r1.hi + ADDV R13, R15, R15 + SGTU R13, R15, R24 + ADDV R24, R16, R16 + MOVV R16, R8 + MULV R10, R12, R26 // h2r1 + MULV R9, R12, R13 // h1r1.lo + MULHVU R9, R12, R16 // h1r1.hi + ADDV R13, R25, R25 + ADDV R16, R26, R27 + SGTU R13, R25, R24 + ADDV R27, R24, R26 + ADDV R8, R25, R25 + SGTU R8, R25, R24 + ADDV R24, R26, R26 + AND $3, R25, R10 + AND $-4, R25, R17 + ADDV R17, R14, R8 + ADDV R26, R15, R27 + SGTU R17, R8, R24 + SGTU R26, R27, R28 + ADDV R27, R24, R9 + SGTU R27, R9, R24 + OR R24, R28, R24 + ADDV R24, R10, R10 + SLLV $62, R26, R27 + SRLV $2, R25, R28 + SRLV $2, R26, R26 + OR R27, R28, R25 + ADDV R25, R8, R8 + ADDV R26, R9, R27 + SGTU R25, R8, R24 + SGTU R26, R27, R28 + ADDV R27, R24, R9 + SGTU R27, R9, R24 + OR R24, R28, R24 + ADDV R24, R10, R10 + + SUBV $16, R6, R6 + BGE R6, R7, loop + +bytes_between_0_and_15: + BEQ R6, R0, done + MOVV $1, R14 + XOR R15, R15 + ADDV R6, R5, R5 + +flush_buffer: + MOVBU -1(R5), R25 + SRLV $56, R14, R24 + SLLV $8, R15, R28 + SLLV $8, R14, R14 + OR R24, R28, R15 + XOR R25, R14, R14 + SUBV $1, R6, R6 + SUBV $1, R5, R5 + BNE R6, R0, flush_buffer + + ADDV R14, R8, R8 + SGTU R14, R8, R24 + ADDV R15, R9, R27 + SGTU R15, R27, R28 + ADDV R27, R24, R9 + SGTU R27, R9, R24 + OR R24, R28, R24 + ADDV R10, R24, R10 + + MOVV $16, R6 + JMP multiply + +done: + MOVV R8, (R4) + MOVV R9, 8(R4) + MOVV R10, 16(R4) + RET |